I have also updated my Plug-In to the most recent version, but get the same error.
Our site was hosted on Windows. We changed the setting for root and temp directory (open_basedir = {WEBSPACEROOT}{/}{:}{TMP}{/}) and (allow_url_include = On) in the php.ini file to fix Job listing export PDF issue.
I checked our logs and see this PHP error:
PHP Warning: chr() expects parameter 1 to be int, string given in C:\inetpub\vhosts\informationevolution.us\httpdocs\wp-content\plugins\job-postings\tcpdf\include\tcpdf_fonts.php on line 1671
